<script src="vue.js"></script>
<div id="app">
    <my-componnet></my-componnet>
    <my-componnet></my-componnet>
 
</div>
    <script>
        Vue.component("my-componnet", {
            data(){
                return {
                    count: 0
                }
            },
            template:'<button v-on:click="count++">被点击{{count}}次</button>'
        })

        var vue=new Vue({
        el:'#app',
        })
    </script>